EP 0626660 A2 19941130 - Document authentication system utilizing a transparent label.
Title (en)
Document authentication system utilizing a transparent label.
Title (de)
System zur Überprüfung der Echtheit von Dokumenten mit Hilfe transparenter Etiketten.
Title (fr)
Système d'identification et de contrÔle de documents par l'apposition d'un label transparent.
Publication
Application
Priority
US 9067193 A 19930524
Abstract (en)
This invention relates to a document authentication concept wherein a transparent tape having encoded text thereon is applied to the document. The encoded text printed on the transparent tape is printed with invisible ink so that the message thereon is not visible to the unaided eye. Preferably, the ink is visible in the infrared range. With such a combination, the authentication medium can be applied to a document that has a predetermined format so that the tape can be placed over a portion of the text and the latter will still be readable. <IMAGE>
IPC 1-7
IPC 8 full level
B42D 15/10 (2006.01); G06K 1/12 (2006.01); G06K 7/12 (2006.01); G06K 19/06 (2006.01); G09C 1/00 (2006.01)
CPC (source: EP US)
G06K 1/121 (2013.01 - EP US); G06K 7/12 (2013.01 - EP US); G06K 19/06009 (2013.01 - EP US); G06K 2019/06225 (2013.01 - EP US); Y10S 283/901 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0626660 A2 19941130; EP 0626660 A3 19950503; EP 0626660 B1 19991201; CA 2123456 A1 19941125; CA 2123456 C 19980915; DE 69421845 D1 20000105; DE 69421845 T2 20000420; JP H071874 A 19950106; US 5514860 A 19960507
DOCDB simple family (application)
EP 94303629 A 19940520; CA 2123456 A 19940512; DE 69421845 T 19940520; JP 10700494 A 19940520; US 31806194 A 19941003